Drying apparatus.



1. 0. ROSS. DRYING APPARATUS.

APPUCATIDN FILED D503. 1913.

Patented Aug. 17, 1915 eras arm sures.

JOEE 0. ROSS, F BOSTON, MASSACHUSETTS, ASSIGNOR TO B. F. SIUBTEVANT COM- PANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

. narrate. Armenians.

mitoses.

To all whom it may concern:

Be it known that '1, JOHN 0. Ross, a citizen of the United States, residin at Roslinr dale, Boston, in the county of uftolk and State of Massachusetts, have invented cer tain new and useful Improvements in Drying Apparatus; and I do hereby declare the following to be a full, clear, and exact descriptionof the invention, snchas will en able others skilled in the art to which zit ap pertains to make and use the same.

be present invention relates to drying apparatus and more particularly to a device for better applying the air to the ma terial to be dried.

The apparatus consists of a nozzle through which the air is discharged and guides or deflectors "atthe sides of the nozzle which serve to draw in' additiohal air and to better distribute the air blast.

In the drawings which illustrate the preferred embodiment of the present invention, Figure 1 is a side elevation of the apparatus; and Fig. 2 is a section along the line 2 2 of Fig. 1. I

In the illustrated apparatus, dry air is blown through the-conduit 1 and is discharged therefrom downwardly through a number of nozzles 2. These nozzles 2 consist of short rectangular pipes or collars projecting down from the; conduit 1. The

material to be dried is usually a web of paper, fabric or the like and is carried by a suitable conveyer longitudinally along beneath the conduit 1. -The conveyer illustrated in the drawings consists of a number of supporting rolls 8 over which the web 9 is drawn horizontally. The web 9 is supported so that the conduit 1 lies substantially'over the middle of the web and the air is discharged against the middle of the web so as to insure an even drying thereof,

as described in myco-pending application for drying apparatus and method of drying, Serial No. 805,429, filed of even date here with.

Upon opposite sides of the nozzles2 are wings or deflectors 3. These wings or dellectors are curved as shown in the drawings. They are made of sheet metal and are mounted upon supporting rods 4 which are in turn supported in end bearings Handles 6 and locking devices 7 serve to turn the supporting rods 4 and hold them in adjusted position.

specification of Letters Patent.

ing from the nozzles 2.

Patented Aug. it, rain,

' Application filed December 8, 1918. serial No. 805,430.

As shown in Fig. 2, the defiecters are spaced at a little distance from eachside of the nozzles 2, leaving intake openin s be tween the nozzles 2 and the tops oft e de The bottom of the deflectors difiectors verge toleave a flaring or divergent mouth or passage betwecn them. The blast of air coming through the nozzle 2 acts upon the aspirator principle to cause additional air to be drawn between thetops of the de- 4 fiectors 3. This additional air mi'ngles with the air coming from the nozzle 2 and forms a blast of much greater volume than the air 'fl'OIll the nozzles alone. Moreover, because of the divergent passage between the defiectors, this last is much more evenly and widely distributed than would be the blast blown from the nozzles 2 alone. Generally the air blown through the conduit is heated air. This air does not become saturated by a single contact with the material to be dried.' Consequently, this heated, but not saturated air, may be advantageously again applied to the material." This is done in the present apparatus by the heated and partially saturated air in the neighborhood being drawn in between the tops of the dcilectors and mingled with the fresh air com- Thus the amount of air whichhas to be heated in the first in stance is reduced. llloreoveiylsince the dc .flectors serve to introduce additional air into the blast blown against the material, it is possible to have the air blown through the nozzles 2 of smaller amount and flowing at higher .velocity than would be possible without the deflectors. This is economical in that smaller conduits and blowers maybe used for blowing the air.

Byadjusting the position of the deflectors 3 by means of the handles 6, the distribution pointedout in the folthe web 'and mounted upon opposite sides of the nozzle and spaced therefromto leave an intake through which additional air is drawn by the blast of air issuing from the nozzle, said deflector plates having the ends next the web divergent to better distribute the air.

Apparatus for drying webs of paper or fabric having, in combination, a nozzle through which. airis discharged against the web and deflector plates located upon opposite sides of the nozzle and spaced from it so as to form an intake between the deflectors and nozzles through which additional air may be drawnby the blast of air issuing from the nozzle, the ends of said deflector plates next the web being divergent to better distribute the air over the web.

3. Apparatus for drying webs of paper or fabric having, in combination, a nozzle through which air is discharged against the web and deflector plates located upon oppos1te sides of the nozzle and spaced from it so as to form an intake between the de fiectorsand nozzles through which additionalair may be drawn by the blast of air issuing from the nozzle, the ends of said deflector plates next the web being divergent tobetter distribute the air over the web, and means for turning the deflector plates to yary the distribution of the air against the web. t

4. Appa 'atus for drying webs of paper or fabric having, in combination, a conveyer for carrying the web, a conduit and a nozzle or nozzles for directing towardthe web a blast of air, and means for supplying additional air to be blown against the web by the blast andior checking the velocity of.

the blast, including), curved deflector plates upon opposite sides of the nozzle and spaced from it so as to form an lntake betweenthe deflector plates and nozzles'into which addit onal air may be drawn by the" blast issuing from the nozzle, said plates having their ends next the web divergent so as to check the velocity of the air and better distribute it nor the we b JOHN O. ROSS.

, Witnesses:

Homer: V AN EVEREN, Geo. E. STEBBINS. 

